PDF on facebook

Hi guys,
Need to showcase a pdf document on facebook. I know i could that before with scribd for facebook pages, but it doesn't work anymore..
The goal is to make a new tab and in that tab show the document fully.
I don't to share external link or something similar, users should be able to read that within facebook.
Please let me know if you know anything.
Thnkas

See original post by GULLIVER